Manuals / Cisco Systems / Computer Equipment / Network Router

Cisco Systems 3800 Series warranty More Troubleshooting Help, Recovering a Lost Password

Models: 3800 Series

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Recovering a Lost Password

Note The jumpers are not needed to troubleshoot Cisco IOS problems. If the Cisco IOS software becomes corrupted, remove the CompactFlash memory card to force the router to boot in ROM monitor mode.

Change these settings only after consulting with your service representative or Cisco technical support.

Recovering a Lost Password

You can recover a lost enable password, but an enable secret password is encrypted and is not recoverable. If you lose an enable secret password configured on your router, you can replace it with a new enable secret password.

For password recovery and replacement procedures, see

http://www.cisco.com/warp/public/474/index.shtml.

More Troubleshooting Help

For information about obtaining technical support, see the “Obtaining Technical Assistance” section on page 12 of “Introduction to Cisco 3800 Series Routers Hardware Documentation.”

Troubleshooting Cisco 3800 Series Routers

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Cisco Systems 3800 Series warranty More Troubleshooting Help, Recovering a Lost Password

Contents

Objectives and Organization Conventions AudienceConvention Description Bewaar Deze Instructies Safety WarningsAvvertenza Importanti Istruzioni Sulla Sicurezza Warnung Wichtige SicherheitshinweiseAviso Instruções Importantes DE Segurança Guarde Estas Instrucciones GEM Disse Anvisninger Page Safety Warnings Introduction to Hardware Documentation Cisco Product Document Related DocumentationDuration of Hardware Warranty Cisco 90-Day Limited Hardware Warranty TermsReplacement, Repair, or Refund Policy for Hardware Ordering Documentation To Receive a Return Materials Authorization RMA NumberObtaining Documentation Cisco.comCisco Technical Support Website Submitting a Service RequestDocumentation Feedback Obtaining Technical AssistanceObtaining Additional Publications and Information Definitions of Service Request SeverityCopyright 2004 Cisco Systems, Inc. All rights reserved Router Descriptions Overview of Cisco 3800 Series RoutersFront View of Cisco 3825 Router Rear Panel of Cisco 3825 Router Front Panel of Cisco 3845 Router Product Identification Product IdentificationCisco Product Identification Tool Built-In PortsNetwork Modules Module and Interface Card CapacityInterface Cards Network Module Ports Port NumberingAims and PVDMs Built-In PortsAsynchronous Interface Numbering Interface Card PortsRouter Power Option Input IP Phone Power Output PowerMemory Specification Value LED IndicatorsReal-Time Clock and Battery Technical SpecificationsInformation, see the Cisco 2800 Series and Cisco Information, see the Cisco 2800 Series and Cisco Regulatory Compliance Regulatory Compliance Overview of Cisco 3800 Series Routers Statement Safety RecommendationsSafety with Electricity General Site Requirements Power Supply ConsiderationsPreventing Electrostatic Discharge Damage Site Environment Equipment Racks Site ConfigurationTask Verified by Date Installation ChecklistInspecting the Router Creating a Site LogOL-5967-01 Installing Cisco 3800 Series Routers in an Equipment Rack Bracket pair for 19-inch rack Rack-Mounting the RouterRack-Mounting Brackets for Cisco 3845 Routers Attaching Brackets to the Router for Rack MountingBracket Installation for Front Mounting Right bracket For 19-inch rack Use six screws on each side Installing the Router in a RackAttaching the Optional Cable Management Bracket Grounding the RouterGround lug attachment Ring Terminal Ground Connection on Cisco 3825 Router Ring Terminal Ground Connection on Cisco 3845 Router OL-5969-01 Connecting Cables to Cisco 3800 Series Routers Power Connections120 VAC, 30 a 240 VAC, 20 A. Statement Connecting Routers to AC PowerConnecting Routers to DC Power 120 VAC, 45 a 240 VAC, 30 A. Statement60 VDC, 30 A. Statement DC Input1 Safety Ground OvercurrentWire Size Wire Terminal Lug Protection 60 VDC, 20 A. StatementDC Input Wiring Procedure + + B Dual DC Power Supply Configuration in Cisco 3825 Routers Connecting to One Source Only-Source a or Source B Va voltage = Vb voltage greater than 0.25 Source a and Source B Wired with Opposite-Polarity Grounds Connecting Routers to Backup PowerRPS Connector on Cisco 3825 Router Connecting WAN, LAN, and Voice CablesConnecting a Console or Modem Connecting a Computer to the Cisco 3825 Router Console Port Connecting a Console to the Console PortConnecting a Computer to the Cisco 3845 Router Console Port Connecting a Modem to the Auxiliary PortModem Prerequisites Powering Up Cisco 3800 Series RoutersVerifying LED Indications Power-Up ProcedureSYS Color and State MeaningSetting the Date and Time Verifying the Hardware ConfigurationTroubleshooting Cisco 3800 Series Routers Troubleshooting the Power and Cooling Systems Solving ProblemsEnvironmental Reporting Features Troubleshooting Modules, Cables, and Connections Cisco 3825 Front-Panel LEDs LEDsCisco 3825 Rear-Panel LEDs 3825 3845 LEDAIM0 PS1 Show environment CommandCisco 3800 Series Routers Error MessagesCisco 3845 Router Error Messages Jumper Settings Recovering a Lost Password More Troubleshooting HelpOL-5972-01 Installing Network Modules Installing Network Modules Cisco 3800 Series RoutersInstalling Network Modules Modifying the Width of Network Module Slots Slot divider Slot adapters Slot Adapters for Double-Wide Network Modules Generic Router Installing and Removing Slot DividersSlot Divider for Network Module Slot Installing Slot Dividers121385 Removing Slot Dividers Installing Slot Adapters Installing and Removing Slot AdaptersRemoving Slot Adapters Installing Blank FaceplatesInstalling Interface Cards Installing Interface Cards in Cisco 3800 Series RoutersSlot Divider for Cisco 3825 Hwic Slot Installing Slot Dividers in Hwic SlotsSlot Divider for Cisco 3845 Hwic Slot Inserting Slot Divider into Hwic Slot Cisco 3825 Router Slot divider Screw tab Screw hole Track Pull the slot divider straight out of the Hwic slot Removing Slot Dividers from Hwic SlotsShow a blank faceplate for an interface card slot Installing Blank Faceplates over Empty Hwic SlotsInstalling Blank Faceplates over Empty Hwic Slots Maximum Cisco Part Number SFP Transceiver Micrometer Mode DistanceLaser Safety Guidelines Installing SFP ModulesRemoving SFP Modules Disconnecting SFP Latch MechanismsOL-5968-01 Preventing Electrostatic Discharge Damage Compact Removing CompactFlash Memory CardsCompactFlash Slot Location in Cisco 3845 Router Installing CompactFlash Memory CardsUsing the Compact Flash Guard Copyright 2004-2005 Cisco Systems, Inc. All rights reserved OL-5975-04 Safety with Electricity Removing the Cover from a Cisco 3825 Router Removing the Power Supply Assembly from a Cisco 3825 Router Removing the Plug-In Motherboard from a Cisco 3845 Router Removing the Motherboard from a Cisco 3845 Router Component Locations on the MotherboardPVDM3 Memory PVDM2 PVDM1 Component Locations on a Cisco 3845 Motherboard Sdram Dimm Removal and InstallationRemoving an Sdram Dimm Dimm Location and OrientationCisco 3845 Router procedure on Installing an Sdram DimmOverview AIM Installation and RemovalAccessory Kits Installing an AIMRemoving Screws from a Motherboard for AIM Installation Connecting the AIM to the MotherboardMetal Standoffs Attaching an AIM to a Motherboard AIM Installed on a Motherboard Applying the AIM Label Verifying AIM InstallationRemoving Screws from an AIM Removing an AIMCompactFlash Memory Card Location on the AIM Installing a CompactFlash Memory Card on the AIMPvdm Location and Orientation Pvdm Installation and RemovalTilt Pvdm up to vertical Clips snap into place Installing a PvdmRemoving a Pvdm Installing a Power Supply in a Cisco 3825 RouterInstalling an AC Power Supply Removing the Existing Power Supply100 101 Installing a DC Power Supply102 103 Installing an IP Phone Power Supply104 105 Reinstalling the Cover on a Cisco 3825 Router106 107 108